ΔE 10.8, fair: the same colour family, but not a straight swap. Deep Sky is a little lighter, warmer than Dark Mica Blue.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Deep Sky is a little lighter, warmer than Dark Mica Blue.
The same difference applies the other way round: Dark Mica Blue is a little darker, cooler.
ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.
See Dark Mica Blue on the colour wheel See Deep Sky on the colour wheel
All matches: Dark Mica Blue equivalents · Deep Sky equivalents